How to identify invalid shortcuts

Recentley we imported some NSF and PST files for some users who joined our company. Now I am seeing DCOM errors on the EV server which compain about these computers it shows unable to communicate with the original archive server obviosuly these servers does not exists in our environment.

What would be the best way to :

identify these users

find these in vaild shortcuts

so that I can remove them and then re-import the NSF/PST files. I am trying to avoid visitin gthese users and manually searching for these shortcuts.

thank you.